<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像图片 -->
      <div class="avatar_box">
        <img src="../assets/logo.png">
      </div>
      <!-- 登陆表单区域 ref属性值loginFormRef是表单实例对象-->
   <el-form ref="loginFormRef" :model="loginForm" :rules="rules" class="login_form" >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            prefix-icon="iconfont icon-user"
            v-model="loginForm.username"
          />
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            prefix-icon="iconfont icon-3702mima"
            v-model="loginForm.password"
            type="password"
          />
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">
            登录
          </el-button>
          <el-button type="info" @click="resetLoginFrom">
            重置
          </el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data: function () {
    return {
      // 登陆表单对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 表单验证规则对象
      rules: {
        username: [
          { required: true, message: '请输入活动名称', trigger: 'blur' },
          { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入活动名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 5 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    // 重置表单按钮
    resetLoginFrom: function () {
      this.$refs.loginFormRef.resetFields()
    },
    login: function () {
      // 调用表单引用对象的验证方法 参数是回调函数 vaild是验证结果 为布尔值
      this.$refs.loginFormRef.validate(async (valid) => {
        console.log(valid)
        if (!valid) {
          return
        }
        const { data: res } = await this.$http.post('login', this.loginForm)
        console.log(res)
        if (res.meta.status !== 200) {
          this.$message.error('登陆失败')
          return
        }
        this.$message.success('登陆成功')
        window.sessionStorage.setItem('token', res.data.token)
        // 编程时导航
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style scoped lang="less">
  .login_container {
    height: 100%;
    background-color: #2b4b6b;
  }
  .login_box {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;

    .avatar_box {
     position: absolute;
     left: 50%;
     transform: translate(-50%,-50%);
      height: 130px;
      width: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      background-color: #fff;
       img {
         width: 100%;
         height: 100%;
         border-radius: 50%;
         background-color: #eee;
        }
    }
  }
  .login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box
  }
  .btns {
    display: flex;
    justify-content: flex-end;
  }
</style>
